
We effectively rewrite the equation as

In order for the LHS to be defined, we need to restrict
, or
. Now, the LHS will vanish when the numerator is 0, which happens for

This value is indeed smaller than 4, so the solution is
.
The answer to the question is C
Answer:
−8y2+9x+4y+11
Step-by-step explanation:
20 + 12 + x = 48 / -20
12 + X = 48 - 20 / -12
X = 48 - 20 - 12
X = 28 - 12
X = 16